Sinead O'Connor writes fourth open letter to Miley Cyrus

Sinead O'Connor has written a fourth open letter to Miley Cyrus in which she demands an apology for recent claims made against her.

The 'Nothing Compares 2 U' singer penned a 1,700-word-long message to the 'Wrecking Ball' singer. She claims she has received messages from people urging her to commit suicide, that Cyrus has mocked those with mental health issues and she also defends Amanda Bynes.

The messages in the post drew attention to O'Connor's past struggles with bipolar disorder and other mental health issues and were prefixed by Cyrus writing: "Before Amanda Bynes.... There was...."

Taking to Facebook to publish the open letter, O'Connor - who has duetted with Cyrus in an unofficial remix - writes: "The type of media bullying which resulted from what you did causes suicides. And perpetuates the idea that those deemed by the media to be crazy are fit for nothing but to be mocked and insulted.

"This should also involve an apology to all sufferers of mental health difficulties and all those who have had experience of suicidal feelings or who have been affected by suicide," said O'Connor, who previously stated that Cyrus is "too young to know what's doing".

In the letter, the singer also writes about the rate of suicide amongst teenagers, stating that it is the "third-highest cause of death for those in that age range", adding that Cyrus had revealed most of her fans fall into that category.

"Look Miley," continued O'Connor. "What you did to myself and Amanda encouraged enormous abuse of us both, publicly and privately. And will certainly have made it difficult for young people who admire you and who may be suffering with mental health problems or suicidal ideation to feel they can be open and seek help, since you had us mocked for seeking help."

O'Connor, who has threatened Cyrus with legal action, then states that due to what Cyrus has said about the singer, she received "numerous communications from people urging me to commit suicide".

"Also I would appreciate you stating publicly that the tweets of mine you posted (wherein I sought a psychiatrist from outside Ireland so as to save my life) were in fact two years old and do not reflect my current medical condition. This is because it is extremely hard to get employment when people think one is in mid-breakdown.

"It's really about dignity Miley. All people who have suffered are entitled to dignity and stigmatisation is now a human rights issue.So.. I'm not 'feuding' or fighting with you. But I am asking that you restore dignity to myself and Amanda and all sufferers.

"Please do the right thing. You will actually save lives by doing so. There are people who will NOT die tonight, if you are brave enough to state that there is nothing whatsoever wrong with any person seeking publicly or privately, help, in order to stay alive. And that there are no circumstances under which it is acceptable for anyone to use mental illness as a stick with which to beat people.